Curriculum Development Center for Science and Mathematics, Science Education Center University of the Philippines. (1977). High school science 1: Exploring our environment. Department of Education Culture and Sports.
Citace podle Chicago (17th ed.)Curriculum Development Center for Science and Mathematics, Science Education Center University of the Philippines. High School Science 1: Exploring Our Environment. Manila: Department of Education Culture and Sports, 1977.
Citace podle MLA (9th ed.)Curriculum Development Center for Science and Mathematics, Science Education Center University of the Philippines. High School Science 1: Exploring Our Environment. Department of Education Culture and Sports, 1977.
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